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Information Center Test 5D - Service 4WD Switch Message

NOTE: Perform INFORMATION CENTER TEST 5A  before proceeding with this test. For connector terminal identification, refer to CONNECTOR IDENTIFICATION  . For wiring diagrams, refer to WIRING DIAGRAMS  . Refer to DOOR LOCKS - POWER & KEYLESS ENTRY SYSTEM article. After each repair, perform TEST VER-1A  .
CAUTION: Always turn ignition switch to OFF position prior to disconnecting any module connector. Ensure all connectors are clean and tight.
  1. Disconnect information center 20-pin connector. Using external ohmmeter, measure resistance between ground and terminals No. 14 and 19 on information center 20-pin connector. If resistance is less than 200 ohms on either circuit, go to next step. If resistance is 200 ohms or greater on both circuits, go to step 6).
  2. Measure resistance between ground and terminals No. 15, 17 and 18 on information center connector. If resistance is less than 200 ohms on any circuit, go to next step. If resistance is 200 ohms or greater on any circuit, replace information center.
  3. Disconnect transfer case switch. Switch is located on top left side of transfer case. Using external ohmmeter, measure resistance between ground and terminal No. 15 (Gray/Orange wire) on information center connector. If resistance is less than 200 ohms, repair Gray/Orange wire for short to ground. If resistance is 200 ohms or greater, go to next step.
  4. Using external ohmmeter, measure resistance between ground and terminal No. 17 (Yellow/Black wire) on information center connector. If resistance is less than 200 ohms, repair Yellow/Black wire for short to ground. If resistance is 200 ohms or greater, go to next step.
  5. Using external ohmmeter, measure resistance between ground and terminal No. 18 (Light Blue/Red wire) on information center connector. If resistance is less than 200 ohms, repair Light Blue/Red wire for short to ground. If resistance is 200 ohms or greater, replace transfer case switch.
  6. Disconnect transfer case switch. Switch is located on top left side of transfer case. Connect jumper wire between terminals No. 3 and 4 on transfer case switch connector. Go to next step.
  7. Using external ohmmeter, measure resistance between ground and terminal No. 14 (Black/Red wire) on information center connector. If resistance is less than 200 ohms, go to next step. If resistance is 200 ohms or greater, repair open Black/Red wire.
  8. Measure resistance between ground and terminal No. 19 (Light Green/Orange wire) on information center connector. If resistance is less than 200 ohms, replace transfer case switch. If resistance is 200 ohms or greater, repair open Light Green/Orange wire.
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